D-D Fluidised Reactor Replacement Sponges for the D-D H2Ocean Fluidised Reactor FMR-75. The set includes 1 fine sponge and 1 coarse sponge which are designed to stop media from escaping the reactor, such as RowaPhos and Carbon. It is recommended to replace these at least once every 3 month as the foams will deteriorate over time.
